Porting and polishing will be extra. Usually any machining is extra. The rebuild price is basically r&r'ing the parts.
Let the shop do it's stuff before you buy any kit. Until they measure and check everything there is no telling what you will need in what size.
Plus, the shop may be able to get you a better deal on parts than a kit would. Sometimes.
I know there is a lot of info on what a "good" rebuild entails here and other places. Maybe in the books you are getting.